George and Amal Clooney – “George Clooney is a silver fox as always in a grey suit,” says Peta. “Amal is in a stunning yellow dress and matching hat – this is a favourite colour of hers, for good reason!” Image: Getty

Pippa Middleton – “Pippa Middleton is wearing The Fold,” says Peta. “This brand is made in the UK and is nicely understated.” The dress is just £500 – presumably rather less expensive than the famous bride’s gown! Image: Getty

James Corden and Julia Carey – “All the men are looking dapper in either tails (minus the top hats!) or lounge suits,” says Peta. “As predicted, the top guest trends we’re seeing among the women are pastel and floral.” Image: Getty

Princess Eugenie and Princess Beatrice – This pair come in for a lot of fashion flak, but honestly, we’re rather taken with Princess Eugenie’s ’60s-style dress – it’s rather Jackie O, no? And those Versace pumps! READ MORE: 37 beautiful blue bridesmaids’ dresses

Cressida Bonas – If we ever get invited to an ex’s wedding, we’d totally wear something like this. Yes, you could go for wildly sexy body con, but something like this, so polished and simultaneously achingly cool, just sends a message: ‘Hey, did we used to date? Really? Sorry, I barely remember that.” Well played, Ms Bonas. READ MORE: 100 best guest dresses for every type of wedding

Lady Kitty Spencer – We’re rather taken with this Dolce e Gabbana dress. It may be garden-party floral, but the vibrant green hue gives it a modern, notice-me edge.

Gina Torres – Another of Meghan’s former Suits co-stars shows how you make red work for a wedding. The vibrant hue could easily be too attention-grabbing, but a delicate pattern softens the look. This Costarellos dress is perfection!